English Reference
adjective · noun

evil

adj. · n.
US /ˈivəɫ/ UK /ˈiːvəl/ evil UK spelling evils

  1. 01 B1 Intermediate

    adj.very cruel, bad, or morally wrong.

    adj.profoundly immoral or malevolent in character or intent.

    Simple

    In many old stories, the hero must defeat an evil king to save the land.

    In context

    The philosopher argued that no human is born inherently evil, but rather that circumstances and choices shape a person's moral compass.

  2. 02 B2 Upper Intermediate

    adj.causing harm or having a very unpleasant quality, like a bad smell or mood.

    adj.tending to cause harm, distress, or misfortune; can also describe sensory experiences that are intensely unpleasant.

    Simple

    An evil smell was coming from the old bins behind the restaurant.

    In context

    The sailors watched the horizon with concern, noting the evil look of the gathering storm clouds.

  3. 03 C1 Advanced SlangTechnical Computing

    adj.something that is considered a bad idea or a poor way of doing things.

    adj.describes a practice or method that is considered undesirable, inefficient, or likely to cause technical problems.

    Simple

    Most programmers agree that using global variables like that is evil.

    In context

    While the shortcut works in the short term, senior developers consider hard-coding credentials to be fundamentally evil due to security risks.

    Teacher's tip

    In technical circles, 'evil' is often used hyperbolically to describe poor design choices rather than moral failings.

    suboptimaldeprecated
    best practice
  4. 04 B2 Upper Intermediate

    n.the force or quality of being very bad or cruel.

    n.the abstract concept of moral badness or the manifestation of malevolent forces.

    Simple

    The book explores the struggle between good and evil in the modern world.

    In context

    The documentary examines the banality of evil, showing how ordinary people can participate in horrific systemic crimes.

  5. 05 B2 Upper Intermediate

    n.something that causes trouble, suffering, or damage.

    n.a specific source of harm, suffering, or misfortune; often used to describe social problems.

    Simple

    High inflation is a social evil that affects the poorest families the most.

    In context

    The reformer dedicated his life to eradicating the evils of child labour and urban poverty.

Far from decrying the evils of plastics, Geyer and McCauley view them in terms of trade-offs.

Phys.org· 4 Sept 2026

They manage to see her as mentally ill rather than “evil”, despite their experience of life lived right on the border between those two states.

The Guardian· 19 Aug 2026

Etymology 1

From Middle English yvel, evel, ivel, uvel, from Old English yfel, from Proto-West Germanic ubil, from Proto-Germanic ubilaz, from Proto-Indo-European h₂up(h₁)élos, a deverbal derivative of h₂wep(h₁)-, *h₂wop(h₁)- (“treat badly”). See -le for the supposed suffix. Alternatively from upélos (“evil”, literally “going over or beyond (acceptable limits)”), from Proto-Indo-European upo, *h₃ewp- (“down, up, over”). Cognates Cognate with Dutch euvel (“evil”), German übel (“bad, evil”), German Low German övel (“evil”), Luxembourgish iwwel (“queasy, nauseous; bad”), Gothic 𐌿𐌱𐌹𐌻𐍃 (ubils, “bad, evil”). Compare Old Irish fel (“bad, evil”), from Proto-Celtic *uɸelos, and Hittite 𒄷𒉿𒀊𒍣 (huwapp-ⁱ, “to mistreat, harass”), 𒄷𒉿𒀊𒉺𒀸 (huwappa-, “evil, badness”).

Etymology 2

From Middle English yvel, evel, ivel, uvel, from Old English yfele (“badly, evilly”), a derivative of the adjective yfel (“bad, evil”). Often reinterpreted as the noun in the later language (as in "to speak evil").

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin ine-pro *upo
Level B2 · Upper Intermediate
Frequency Common
Updated